26
exHausT
PORT
Cleaning
Parts Required:
As needed: Muffler Gasket
1. Remove spark plug lead.
2. Remove muffler cover screws and remove muffler
cover.
3. Place piston at top dead center.
4. Remove muffler bolts (A), eyeplate (B), muffler (C),
and muffler gasket (D). Check parts for wear or
damage, and replace if necessary.
5. Use a wood or plastic scraping tool to clean depos-
its from cylinder exhaust ports (E).
6. Install muffler gasket (D), muffler (C), eyeplate (B),
and muffler bolts (A). Tighten bolts to 60-70 kgf •
cm (50-60 in • lbf).
7. Connect spark plug lead.
8. start engine, and allow unit to warm up
at idle
for
several minutes.
9. stop engine, and re-tighten bolts to to 60-70 kgf •
cm (50-60 in • lbf).
10. Install muffler cover and tighten screws.
11. start engine and check for exhaust leaks between
muffler and cylinder head. Stop engine if leak is
found and correct problem before operating chain
saw.
A
B
C
E
D
muffleR
sPaRk
aRResTOR
IMPORTANT
Carbon deposits in muffler will cause a drop in engine
output and overheating. spark arrestor screen must be
checked periodically.
1. Remove muffler cover.
2. Remove spark arrestor screen cover, gaskets, and
screen from muffler body.
3. Clean carbon deposits from muffler components.
NOTE
When cleaning carbon deposits, be careful not to dam-
age the catalytic element inside muffler.
4. Replace screen if it is cracked, plugged, or has holes
burned through.
5. assemble components in reverse order.
